One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,6,7,8)(9,10)(11,12)(13,14)(15,16)(18,19)(22,23)(25,26)(27,29)(28,30)(31,32)(3,7)(6,8)(10,14)(11,16)(17,18)(19,21)(20,22)(23,24)(25,27,28,31)(26,29,30,32)(2,5)(6,8)(11,16)(12,15)(18,19)(20,24)(26,30)(29,32) involution — undirected(1,2)(3,6)(4,5)(7,8)(9,11,13,16)(10,15,14,12)(17,19,21,18)(20,23,24,22)(25,26)(27,29)(28,30)(31,32)(1,3)(2,6)(4,7)(5,8)(9,12,13,15)(10,16,14,11)(17,20)(18,22)(19,23)(21,24)(25,27)(26,29)(28,31)(30,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.